Automatic Transmission 2-Speed thru 10-Speed GM Autos | Converters | Shift Kits
Sponsored by:
Sponsored by:

TH350 swap

Thread Tools
 
Search this Thread
 
Old Jun 26, 2017 | 08:38 AM
  #1  
hfthe3rd's Avatar
Thread Starter
TECH Apprentice
iTrader: (1)
 
Joined: Jun 2008
Posts: 390
Likes: 1
From: Buffalo , NY
Default TH350 swap

Yes I have been using the search button but would like to ask a few questions before tackling this project . To start off I have a gutted 99 Camaro 3,0xx weight that I drove last year with just bolt ons with a stock 4L60e and a FTI 3800 stall and trans cooler. So this year I did a cam swap 233/239 older tsp cam and when the car went to get dynoed 1st to 2nd gear took a crap on the dyno. The car made 396/456 . It also has 4.10 gears in the rear . Once all this is figured out I was going to spray 150-200 shot .


Since my trans took a slight crap I'm looking for a relatively cheap way to get back to racing and the occasionally cruising around. I was looking at doing a TH350 swap to save some weight and the cost of parts for them. This is the list I put together for parts and wanted to know if I'm missing anything.

163.00 flexplate / adapter with bolts
249.99-350.00 converter
$50.00 cross member mount ( found a used one)
$25.00 trans rubber mount
$52.00 trans dipstick

$$$ transmission

Is there anything else that I would need ? Also what would be the best th350 to swap in to keep cost down. I know to look for a 9" tail shaft.

My other big question is once installed how does the car know to shift since I'll be getting rid of all the computer crap. I'm assuming I'll always be shifting or do I just leave it in third for cruising around town ?

Another thing is with the converter I'm looking for a decent size stall 4500+ would this be ideal for my set up . I plan on spraying . I found a few used stalls a 9.5" and a 10".

Also I'm pretty sure I know my 4L60 torque converter won't work right. I was just wondering since it doesn't have many miles on it and cost over $800 new.


I appreciate some help wth this swap seeing it's a budget build.
Reply
Old Jun 26, 2017 | 08:59 AM
  #2  
64post's Avatar
TECH Fanatic
Photogenic
Liked
Loved
Community Favorite
iTrader: (5)
 
Joined: Nov 2011
Posts: 1,710
Likes: 228
From: Sonoma Co. Ca.
Default

TH400 for reliability and parts selection.
Reply
Old Jun 26, 2017 | 09:40 AM
  #3  
wht/73's Avatar
TECH Enthusiast
5 Year Member
 
Joined: Sep 2016
Posts: 518
Likes: 0
From: North Jersey
Default

I've been beating on my th350 for 15yrs I've owned my Nova.
Stock rebuild with a trans go shift kit.
2 diffrent converters and 2 different engines.
1st was a 355 that went a 11.7's @ 113/114 and as of 2013 my 406.
The times and the car are in my sig.
That same trans/converter now resides in my sons malibu with a 406 also.
The punishing continues!
I have the streetfighter converter in the garage if you like?
That's what the 355 went 11.7's with!
Here's the pass.


Last edited by wht/73; Jun 26, 2017 at 09:48 AM.
Reply
Old Jun 26, 2017 | 10:38 AM
  #4  
bbond105's Avatar
TECH Junkie
10 Year Member
Liked
Loved
Community Favorite
 
Joined: May 2012
Posts: 3,050
Likes: 716
From: Poplarville, MS
Default

You will need a new cross member to mount the torque arm to. I can’t recall if the TH350 has a tail housing with the mounting bosses to bolt up a torque arm.
Reply
Old Jun 26, 2017 | 03:29 PM
  #5  
hfthe3rd's Avatar
Thread Starter
TECH Apprentice
iTrader: (1)
 
Joined: Jun 2008
Posts: 390
Likes: 1
From: Buffalo , NY
Default

I'm running a aftermarket torque arm that's mounted to the body .
Reply
Old Jun 26, 2017 | 04:01 PM
  #6  
bbond105's Avatar
TECH Junkie
10 Year Member
Liked
Loved
Community Favorite
 
Joined: May 2012
Posts: 3,050
Likes: 716
From: Poplarville, MS
Default

That'll work.
Reply




All times are GMT -5. The time now is 01:34 AM.

story-0
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

Slideshow: This heavily modified 1971 Camaro mixes classic muscle car styling with a fifth-generation Camaro interior and modern LS3 power.

By Verdad Gallardo | 2026-05-12 18:06:42


VIEW MORE
story-1
6 Common C5 Corvette Failures and What's Involved In Repairing Them

Slideshow: From wobbling harmonic balancers to failed EBCMs, these are the issues that define long-term C5 ownership and what repairs typically involve.

By Pouria Savadkouei | 2026-05-07 18:44:57


VIEW MORE
story-2
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

Slideshow: A modern Camaro transformed into a retro icon, this limited-run "Bandit" build blends nostalgia with brute force in a way few revivals manage.

By Verdad Gallardo | 2026-04-21 13:57:02


VIEW MORE
story-3
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

Slideshow: Cadillac didn't just crash the high-performance luxury vehicle party, it showed up loud, supercharged, and occasionally a little unhinged...

By Pouria Savadkouei | 2026-04-16 10:05:15


VIEW MORE
story-4
Top 10 Most Powerful Chevy Trucks Ever Made!

Slideshow: Top ten most powerful Chevy trucks ever made

By | 2026-03-25 09:22:26


VIEW MORE
story-5
Hennessey's New Supercharged Silverado ZR2 Has 700 HP

Slideshow: Hennessey has turned the Silverado ZR2 into a 700-hp off-road monster with supercharged V8 power and a limited production run.

By Verdad Gallardo | 2026-03-24 18:57:52


VIEW MORE
story-6
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

Slideshow: A one-off sports car that looks like a vintage Italian exotic-but hides a C6 Corvette underneath-just sold for the price of a new mid-engine Corvette.

By Verdad Gallardo | 2026-03-23 18:53:41


VIEW MORE
story-7
Awesome K5 Blazer Restomod Comes With C7 Corvette Power

Slideshow: A heavily reworked 1972 K5 Blazer swaps its off-road roots for a low-slung street-focused build with modern V8 power.

By Verdad Gallardo | 2026-03-09 18:08:45


VIEW MORE
story-8
10 Camaros You Should Never Buy

Slideshow: There are thousands of used Camaros on the market but we think you should avoid these 10

By | 2026-02-17 17:09:30


VIEW MORE
story-9
10 LS Engine Myths That Refuse to Die

Slideshows: Which one of these myths do you believe?

By Verdad Gallardo | 2026-01-28 18:10:11


VIEW MORE